Check in codegen test expectations.

test/codegen/expect/language/mixin_type_variable_test_04_multi.js

Index: test/codegen/expect/language/mixin_type_variable_test_04_multi.js
diff --git a/test/codegen/expect/language/mixin_type_variable_test_04_multi.js b/test/codegen/expect/language/mixin_type_variable_test_04_multi.js
new file mode 100644
index 0000000000000000000000000000000000000000..d4d41d6b19656fb826044eeb59359f09e686fc38
--- /dev/null
+++ b/test/codegen/expect/language/mixin_type_variable_test_04_multi.js
@@ -0,0 +1,36 @@
+dart_library.library('language/mixin_type_variable_test_04_multi', null, /* Imports */[
+  'dart_sdk'
+], function load__mixin_type_variable_test_04_multi(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const mixin_type_variable_test_04_multi = Object.create(null);
+  let A = () => (A = dart.constFn(mixin_type_variable_test_04_multi.A$()))();
+  let B = () => (B = dart.constFn(mixin_type_variable_test_04_multi.B$()))();
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  mixin_type_variable_test_04_multi.A$ = dart.generic(T => {
+    class A extends core.Object {
+      new() {
+        this.field = null;
+      }
+    }
+    dart.addTypeTests(A);
+    return A;
+  });
+  mixin_type_variable_test_04_multi.A = A();
+  mixin_type_variable_test_04_multi.B$ = dart.generic(T => {
+    class B extends dart.mixin(core.Object, mixin_type_variable_test_04_multi.A$(T)) {}
+    return B;
+  });
+  mixin_type_variable_test_04_multi.B = B();
+  mixin_type_variable_test_04_multi.D = class D extends mixin_type_variable_test_04_multi.B$(core.int) {};
+  dart.addSimpleTypeTests(mixin_type_variable_test_04_multi.D);
+  mixin_type_variable_test_04_multi.E = class E extends dart.mixin(core.Object, mixin_type_variable_test_04_multi.A$(core.int)) {};
+  mixin_type_variable_test_04_multi.main = function() {
+    new mixin_type_variable_test_04_multi.D();
+  };
+  dart.fn(mixin_type_variable_test_04_multi.main, VoidTovoid());
+  // Exports:
+  exports.mixin_type_variable_test_04_multi = mixin_type_variable_test_04_multi;
+});